Dodge Trucks Improve Aerodynamics

The Dodge Ram will retain its 5.7-liter Hemi gas engine, which pumps out 383 hp and 400 lbs.-ft. of torque, as well as its Cummins turbo diesel rated at 350 hp and 650 lbs.-ft. of torque. But the company is realizing increased fuel efficiency through aerodynamic advances.

The shape of the front grille and hood and shape and placement of the exterior rearview mirrors were developed for optimized aerodynamic performance. A fully styled and integrated air dam helps direct air flow around the vehicle to reduce aerodynamic drag, as well as direct air flow for cooling the engine and air conditioning condenser.

The curve at the leading edge of the windshield frame reduces drag. A raised lip on the cowl screen helps direct air flow and water toward the sides of the windshield. The cowl screen smooths the air flow transition from hood to windshield, reducing turbulence and wind noise.

A large tailgate spoiler integrated into the sheet metal improves aerodynamic flow. Side sills are lowered, extending the attached air flow and eliminating some underbody turbulence. Reduced wheel openings help decrease aerodynamic drag, and optimized ride heights provide aerodynamic efficiencies.

The new front-end module has smaller gaps around the headlamps, while flush fit fog lamp pockets eliminate the drag of fog lamps.

The powertrains have also seen a few subtle changes. The diesel engines are now B20 compatible for fleet customers, and all 2010 Ram heavy-duty and chassis cab diesels come with a standard exhaust brake. The diesel automatic transmission has electronic range select for improved trailering.